Description

7-Hydroxybenzo[B]Thiophene-2-Carboxylic Acid is a high-purity organic building block and key synthetic intermediate of significant commercial importance. Its unique fused heterocyclic structure makes it a versatile precursor for advanced pharmaceutical and agrochemical research. This compound is primarily sought by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and material science industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: A critical building block in the synthesis of novel active pharmaceutical ingredients (APIs), particularly for candidates targeting central nervous system (CNS) disorders and metabolic diseases.
• Agrochemical Synthesis: Used in the research and development of new-generation herbicides, fungicides, and plant growth regulators, leveraging its benzo[b]thiophene core.
• Material Science Precursor: Serves as a monomer or functionalizing agent in the development of organic semiconductors, conductive polymers, and advanced organic electronic materials.
• Dye & Pigment Chemistry: Acts as a key intermediate for synthesizing specialized heterocyclic dyes and high-performance pigments with enhanced lightfastness and color properties.
• Ligand & Catalyst Development: Utilized in organometallic chemistry for creating novel chelating ligands used in catalysis and metal-organic frameworks (MOFs).
• Academic & Contract Research: Essential for medicinal chemistry programs and synthetic methodology research in academic institutions and CROs (Contract Research Organizations).

Basic Information

Product Name	7-Hydroxybenzo[B]Thiophene-2-Carboxylic Acid
CAS No.	88791-09-7
Molecular Formula	C9H6O3S
Molecular Weight	194.21 g/mol
Synonyms	7-Hydroxy-1-benzothiophene-2-carboxylic acid; 7-Hydroxybenzo[b]thiophene-2-carboxylic acid; 2-Carboxy-7-hydroxybenzo[b]thiophene; 7-Hydroxybenzo[b]thien-2-carboxylic acid; 7-Hydroxy-2-benzothiophenecarboxylic acid; 7-Hydroxy-2-thianaphthenecarboxylic acid; 7-Hydroxy-2-thianaphthenic acid; 7-Hydroxybenzo[b]thiophene-2-carboxylate
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards for research and development. Each batch is analyzed to confirm identity, purity, and consistency. Certificates of Analysis (COA) detailing specific test results are available upon request. We adhere to a quality management system to ensure supply reliability and traceability for our global B2B clients.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.